Documentation 2026-08-08 04:59 UTC to 2026-08-09 04:02 UTC

255| `CLAUDE_CODE_ENABLE_FINE_GRAINED_TOOL_STREAMING` | Controls whether tool call inputs stream from the API as Claude generates them. With this off, a large tool input such as a long file write arrives only after Claude finishes generating it, which can look like it's hanging. Enabled by default on the Anthropic API. On Amazon Bedrock and Google Cloud's Agent Platform, enabled per model where the deployed container supports it. Set to `0` to opt out. Set to `1` to force on when routing through a proxy via `ANTHROPIC_BASE_URL`, `ANTHROPIC_VERTEX_BASE_URL`, or `ANTHROPIC_BEDROCK_BASE_URL`. Off by default on Microsoft Foundry and [gateway](/docs/en/llm-gateway) connections |255| `CLAUDE_CODE_ENABLE_FINE_GRAINED_TOOL_STREAMING` | Controls whether tool call inputs stream from the API as Claude generates them. With this off, a large tool input such as a long file write arrives only after Claude finishes generating it, which can look like it's hanging. Enabled by default on the Anthropic API. On Amazon Bedrock and Google Cloud's Agent Platform, enabled per model where the deployed container supports it. Set to `0` to opt out. Set to `1` to force on when routing through a proxy via `ANTHROPIC_BASE_URL`, `ANTHROPIC_VERTEX_BASE_URL`, or `ANTHROPIC_BEDROCK_BASE_URL`. Off by default on Microsoft Foundry and [gateway](/docs/en/llm-gateway) connections |

256| `CLAUDE_CODE_ENABLE_GATEWAY_MODEL_DISCOVERY` | Set to `1` to populate the `/model` picker from your gateway's `/v1/models` endpoint when `ANTHROPIC_BASE_URL` points at an Anthropic-compatible gateway such as LiteLLM, Kong, or an internal proxy. Off by default because gateways backed by a shared API key would otherwise show every user every model the key can access. Discovered models are still filtered by an [`availableModels`](/docs/en/settings#available-settings) allowlist the session receives; deliver the list through [MDM or a managed settings file](/docs/en/settings#settings-files), since [server-managed delivery is not available on gateway configurations](/docs/en/server-managed-settings#platform-availability) |256| `CLAUDE_CODE_ENABLE_GATEWAY_MODEL_DISCOVERY` | Set to `1` to populate the `/model` picker from your gateway's `/v1/models` endpoint when `ANTHROPIC_BASE_URL` points at an Anthropic-compatible gateway such as LiteLLM, Kong, or an internal proxy. Off by default because gateways backed by a shared API key would otherwise show every user every model the key can access. Discovered models are still filtered by an [`availableModels`](/docs/en/settings#available-settings) allowlist the session receives; deliver the list through [MDM or a managed settings file](/docs/en/settings#settings-files), since [server-managed delivery is not available on gateway configurations](/docs/en/server-managed-settings#platform-availability) |

257| `CLAUDE_CODE_ENABLE_OPUS_4_7_FAST_MODE` | Removed in v2.1.142, when the [fast mode](/docs/en/fast-mode) default moved from Opus 4.6 to Opus 4.7 |257| `CLAUDE_CODE_ENABLE_OPUS_4_7_FAST_MODE` | Removed in v2.1.142, when the [fast mode](/docs/en/fast-mode) default moved from Opus 4.6 to Opus 4.7 |

258| `CLAUDE_CODE_ENABLE_PROMPT_SUGGESTION` | Set to `false` to disable prompt suggestions (the "Prompt suggestions" toggle in `/config`). These are the grayed-out predictions that appear in your prompt input after Claude responds. See [Prompt suggestions](/docs/en/interactive-mode#prompt-suggestions) |258| `CLAUDE_CODE_ENABLE_PROMPT_SUGGESTION` | Set to `false` to disable prompt suggestions (the "Prompt suggestions" toggle in `/config`). These are the grayed-out predictions that appear in your prompt input. Takes precedence over the [`promptSuggestionEnabled`](/docs/en/settings#available-settings) setting. See [Prompt suggestions](/docs/en/interactive-mode#prompt-suggestions) |

259| `CLAUDE_CODE_ENABLE_TASKS` | Controls whether sessions use the structured Task tools (`TaskCreate`, `TaskUpdate`, `TaskGet`, `TaskList`) or the legacy `TodoWrite` tool. As of Claude Code v2.1.142, Task tools are the default in all modes. Set to `0` to revert to `TodoWrite`. See [Task list](/docs/en/interactive-mode#task-list) and [Migrate to Task tools](/docs/en/agent-sdk/todo-tracking#migrate-to-task-tools) |259| `CLAUDE_CODE_ENABLE_TASKS` | Controls whether sessions use the structured Task tools (`TaskCreate`, `TaskUpdate`, `TaskGet`, `TaskList`) or the legacy `TodoWrite` tool. As of Claude Code v2.1.142, Task tools are the default in all modes. Set to `0` to revert to `TodoWrite`. See [Task list](/docs/en/interactive-mode#task-list) and [Migrate to Task tools](/docs/en/agent-sdk/todo-tracking#migrate-to-task-tools) |

260| `CLAUDE_CODE_ENABLE_TELEMETRY` | Set to `1` to enable OpenTelemetry data collection for metrics and logging. Required before configuring OTel exporters. See [Monitoring](/docs/en/monitoring-usage) |260| `CLAUDE_CODE_ENABLE_TELEMETRY` | Set to `1` to enable OpenTelemetry data collection for metrics and logging. Required before configuring OTel exporters. See [Monitoring](/docs/en/monitoring-usage) |

261| `CLAUDE_CODE_EXIT_AFTER_STOP_DELAY` | Time in milliseconds to wait after the query loop becomes idle before automatically exiting. Useful for automated workflows and scripts using SDK mode |261| `CLAUDE_CODE_EXIT_AFTER_STOP_DELAY` | Time in milliseconds to wait after the query loop becomes idle before automatically exiting. Useful for automated workflows and scripts using SDK mode |

338 338 

339In print mode they are off by default. Pass [`--prompt-suggestions`](/docs/en/cli-reference#cli-flags) with `-p "<prompt>" --output-format stream-json --verbose` to emit a `prompt_suggestion` message after each turn instead.339In print mode they are off by default. Pass [`--prompt-suggestions`](/docs/en/cli-reference#cli-flags) with `-p "<prompt>" --output-format stream-json --verbose` to emit a `prompt_suggestion` message after each turn instead.

340 340 

341To disable prompt suggestions entirely, set the environment variable or toggle the setting in `/config`:341To disable prompt suggestions entirely, use any of the following:

342 342 

343```bash theme={null}343* Turn off **Prompt suggestions** in `/config`

344export CLAUDE_CODE_ENABLE_PROMPT_SUGGESTION=false344* Set [`promptSuggestionEnabled`](/docs/en/settings#available-settings) to `false` in your settings file

345```345* Set the `CLAUDE_CODE_ENABLE_PROMPT_SUGGESTION` environment variable to `false`, which takes precedence over the setting:

346 ```bash theme={null}

347 export CLAUDE_CODE_ENABLE_PROMPT_SUGGESTION=false

348 ```

349 

350To turn prompt suggestions off across an organization, set `promptSuggestionEnabled` to `false` in [managed settings](/docs/en/settings#settings-files). Also set `CLAUDE_CODE_ENABLE_PROMPT_SUGGESTION` to `false` under the managed [`env`](/docs/en/settings#environment-variables) key so that users can't re-enable them with their own environment variable.

346 351 

347## Emoji shortcodes352## Emoji shortcodes

348 353 

309| `preferredNotifChannel` | **Default**: `"auto"`. Method for task-complete and permission-prompt notifications: `"auto"`, `"terminal_bell"`, `"iterm2"`, `"iterm2_with_bell"`, `"kitty"`, `"ghostty"`, or `"notifications_disabled"`. `"auto"` sends a desktop notification in iTerm2, Ghostty, and Kitty and does nothing in other terminals. Set `"terminal_bell"` to ring the bell character in any terminal. Appears in `/config` as **Notifications**. See [Get a terminal bell or notification](/docs/en/terminal-config#get-a-terminal-bell-or-notification) | `"terminal_bell"` |309| `preferredNotifChannel` | **Default**: `"auto"`. Method for task-complete and permission-prompt notifications: `"auto"`, `"terminal_bell"`, `"iterm2"`, `"iterm2_with_bell"`, `"kitty"`, `"ghostty"`, or `"notifications_disabled"`. `"auto"` sends a desktop notification in iTerm2, Ghostty, and Kitty and does nothing in other terminals. Set `"terminal_bell"` to ring the bell character in any terminal. Appears in `/config` as **Notifications**. See [Get a terminal bell or notification](/docs/en/terminal-config#get-a-terminal-bell-or-notification) | `"terminal_bell"` |

310| `prefersReducedMotion` | Reduce or disable UI animations (spinners, shimmer, flash effects) for accessibility | `true` |310| `prefersReducedMotion` | Reduce or disable UI animations (spinners, shimmer, flash effects) for accessibility | `true` |

311| `processWrapper` | Corporate launcher command placed in front of the [background processes Claude Code starts](/docs/en/corporate-launcher#what-the-launcher-covers). Honored from managed settings, a `--settings` file, and user settings only; the [`CLAUDE_CODE_PROCESS_WRAPPER`](/docs/en/env-vars) environment variable takes precedence when both are set. See [Run Claude Code behind a corporate launcher](/docs/en/corporate-launcher) for the launcher contract. Requires Claude Code v2.1.210 or later | `"/opt/corp/launcher --profile claude"` |311| `processWrapper` | Corporate launcher command placed in front of the [background processes Claude Code starts](/docs/en/corporate-launcher#what-the-launcher-covers). Honored from managed settings, a `--settings` file, and user settings only; the [`CLAUDE_CODE_PROCESS_WRAPPER`](/docs/en/env-vars) environment variable takes precedence when both are set. See [Run Claude Code behind a corporate launcher](/docs/en/corporate-launcher) for the launcher contract. Requires Claude Code v2.1.210 or later | `"/opt/corp/launcher --profile claude"` |

312| `promptSuggestionEnabled` | **Default**: `true`. Show [prompt suggestions](/docs/en/interactive-mode#prompt-suggestions), the grayed-out predictions that appear in your prompt input. Set to `false` or turn off **Prompt suggestions** in `/config` to disable. [`CLAUDE_CODE_ENABLE_PROMPT_SUGGESTION`](/docs/en/env-vars) takes precedence when both are set | `false` |

312| `prUrlTemplate` | URL template for the PR badge shown in the footer and in tool-result summaries. Substitutes `{host}`, `{owner}`, `{repo}`, `{number}`, and `{url}` from the `gh`-reported PR URL. Use to point PR links at an internal code-review tool instead of `github.com`. Does not affect `#123` autolinks in Claude's prose | `"https://reviews.example.com/{owner}/{repo}/pull/{number}"` |313| `prUrlTemplate` | URL template for the PR badge shown in the footer and in tool-result summaries. Substitutes `{host}`, `{owner}`, `{repo}`, `{number}`, and `{url}` from the `gh`-reported PR URL. Use to point PR links at an internal code-review tool instead of `github.com`. Does not affect `#123` autolinks in Claude's prose | `"https://reviews.example.com/{owner}/{repo}/pull/{number}"` |

313| `remote.defaultEnvironmentId` | Default [cloud environment](/docs/en/cloud-environments) for cloud sessions you create from the CLI, such as with `claude --cloud`. Written to user settings when you pick an environment with [`/remote-env`](/docs/en/cloud-environments#select-an-environment-from-the-cli). For Anthropic-hosted environment IDs (`env_...`), follows the standard settings precedence, so a value in a repo's project settings overrides the user-level pick. A [self-hosted environment](/docs/en/self-hosted-environments) ID (`ccpool_...`) is honored only from user settings, managed settings, and the `--settings` CLI flag; Claude Code ignores one in a repo's project or local settings with a warning, so a checked-in file can't steer sessions onto a self-hosted environment you didn't choose | `"env_0123abcd"` |314| `remote.defaultEnvironmentId` | Default [cloud environment](/docs/en/cloud-environments) for cloud sessions you create from the CLI, such as with `claude --cloud`. Written to user settings when you pick an environment with [`/remote-env`](/docs/en/cloud-environments#select-an-environment-from-the-cli). For Anthropic-hosted environment IDs (`env_...`), follows the standard settings precedence, so a value in a repo's project settings overrides the user-level pick. A [self-hosted environment](/docs/en/self-hosted-environments) ID (`ccpool_...`) is honored only from user settings, managed settings, and the `--settings` CLI flag; Claude Code ignores one in a repo's project or local settings with a warning, so a checked-in file can't steer sessions onto a self-hosted environment you didn't choose | `"env_0123abcd"` |

314| `remoteControlAtStartup` | Connect [Remote Control](/docs/en/remote-control) automatically when each interactive session starts, instead of waiting for `/remote-control`. Set to `true` to turn auto-connect on, `false` to turn it off, or leave unset to follow your organization's admin default if one is set, and otherwise Claude Code's current default. Appears in `/config` as **Enable Remote Control for all sessions**. Claude Code ignores a `true` from project or local settings; for the full per-scope behavior, see [Enable Remote Control for all sessions](/docs/en/remote-control#enable-remote-control-for-all-sessions) and the exceptions under [Settings precedence](#settings-precedence) | `false` |315| `remoteControlAtStartup` | Connect [Remote Control](/docs/en/remote-control) automatically when each interactive session starts, instead of waiting for `/remote-control`. Set to `true` to turn auto-connect on, `false` to turn it off, or leave unset to follow your organization's admin default if one is set, and otherwise Claude Code's current default. Appears in `/config` as **Enable Remote Control for all sessions**. Claude Code ignores a `true` from project or local settings; for the full per-scope behavior, see [Enable Remote Control for all sessions](/docs/en/remote-control#enable-remote-control-for-all-sessions) and the exceptions under [Settings precedence](#settings-precedence) | `false` |